(19.12.2013) ‘The Op Order provides the basis of execution of a military mission, if so ordered,’ the former senior intelligence official explained. ‘This includes the possible need to send American soldiers to a Syrian chemical site to defend it against rebel seizure. If the jihadist rebels were going to overrun the site, the assumption is that Assad would not fight us because we were protecting the chemical from the rebels. All Op Orders contain an intelligence threat component. We had technical analysts from the Central Intelligence Agency, the Defense Intelligence Agency, weapons people, and I & W [indications and warnings] people working on the problem … They concluded that the rebel forces were capable of attacking an American force with sarin because they were able to produce the lethal gas. The examination relied on signals and human intelligence, as well as the expressed intention and technical capability of the rebels.’